What does cell division in plants involve?

Cell division in plants primarily involves the processes of replacing old cells and increasing cell numbers. This is essential for growth and development, as new cells are produced through the process of mitosis, allowing plants to expand in size, develop new leaves, stems, and roots, and repair any damaged tissues.

In plants, cell division plays a key role in the overall life cycle, including forming new plant organs and tissues. For instance, meristematic tissues, which are regions of actively dividing cells, contribute significantly to the plant's ability to grow and adapt to its environment.

The other choices do not accurately capture the full scope of cell division in plants. Decreasing cell numbers does not align with the goals of growth and maintenance within plant tissues. Focusing solely on increasing leaf size ignores the broader implications of cell division throughout the plant body. Additionally, while cell death and regeneration are aspects of plant lifecycle processes, they do not solely define the role of cell division. Specifically, cell division is directly aimed at the production of new cells, vital for sustaining and enhancing plant structure and function.